Allemande Sauce

Instructions

1. Make the Velouté Base
   In a medium saucepan, melt the butter over medium heat. Add the flour and cook, whisking constantly, for 2-3 minutes until it forms a smooth paste (roux) that's blonde in color but not browned. Gradually whisk in the stock, ensuring no lumps form. Add the bay leaf and thyme sprigs.
2. Simmer the Sauce
   Bring the mixture to a gentle simmer and cook for about 15-20 minutes, stirring occasionally, until the sauce has reduced by about one-third and has thickened enough to coat the back of a spoon. Remove the bay leaf and thyme sprigs.
3. Prepare the Liaison
   In a separate bowl, whisk together the egg yolks and heavy cream to create a liaison. Temper this mixture by slowly adding about 1 cup of the hot sauce while whisking constantly to prevent the eggs from curdling.
4. Finish the Sauce
   Pour the tempered egg mixture back into the saucepan with the remaining sauce, whisking constantly. Heat gently over low heat (do not boil) until the sauce thickens slightly, about 2-3 minutes. Remove from heat and stir in the lemon juice, white pepper, salt, and nutmeg.
5. Strain and Serve
   For a perfectly smooth sauce, strain through a fine-mesh sieve. The sauce should be velvety, pale yellow, and thick enough to coat the back of a spoon. Serve immediately or keep warm in a bain-marie (water bath) until ready to use.